UPDATE: Sarah Palin's lawyer has told TMZ: "The story asserting that Sarah Palin is 'boycotting' Bristol's wedding has been fabricated. There is no truth to this."

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Bristol Palin has told Us Weekly that her mom, Sarah, "doesn't really approve" of her and Levi Johnston's engagement. Bristol said, "My mom is not 100 percent backing us up right now," and that, "People are more worried for me than excited for me."

According to Bristol, Sarah believes actions speak louder than words. "She's going to wait to see if [Levi] changes," Bristol explained. "But she's just glad he is getting on the right path. She knows how much Tripp means to me, and she wants Tripp to have a father figure."

In a video on UsMagazine.com, Bristol said, Levi "stepping up and getting his education, GED and whatnot, him getting a job and supporting us emotionally and financially and whatnot then I think [my mom will] accept it and be happy for us."

Bristol also said, "I want to get married soon, just so we can live together and be together all of the time."